| Service | Type | Organization | URL | Comments | |
| Bugtraq | e-mail list | Bugtraq | www.securityfocus.com and www.ntbugtraq.com | Great web site for finding tools | |
| Cassandar | Alerts | Center for Education and Research in Information and Security (CERIAS), Purdue University | http://www.cerias.purdue.edu/hotlist/ | Good reference site | |
| CERT/CC Advisories | Advisories | Computer Emergency Response T4eam Coordination Center (CERT/CC) - Carnegie Mellon University | http://www.cert.org | One of the first | |
| SANS NewsBites | e-mail list | Ssystems Administration, Networkding, and Security (SANS) | http://www.sans.org | ||
| X-Force Alerts | Advisory | Internet Secuirty Systems, INC (ISS) | http://xforce.iss.net/ | ||
| http://nvd.nist.gov/ | national vulnerability data base | ||||
| CyberNotes | Monthly Newsletter | National Infrastructure Protection Center (NIPC) | http://www.nipc.gov/ | ||
| The Center for Internet Security (CIS) | http://www.cisecurity.org/ | has some useful benchmarking tools | |||
| CVE (Common Vunerablities & Exposures ) List | Dictionary | Mitre | cve.mitre.org | ||
| RAZOR | Advisory | BindView - | http://razor.bindview.com/ | Good reference site | |